measuring valve guide wear

blacksnapon · Jul 11, 2007

When using a ball gauge to measure wear on valve guides, what type of wear would you expect? 1) more at the bottom 2) more at the top 3) equal wear all the way down 4) wear top and bottom, less in the center

6L PWR · Jul 11, 2007

I vote for top and bottom. I don't want to explain cause it might make me sound dumber than I am.

blackhat620 · Jul 11, 2007

I select answer number 4, more wear top & bottom with the least wear in the center.

lil_dq · Jul 11, 2007

I say thats what my machinist is for!!!ROTFLMAO

mrxlh · Jul 12, 2007

Wear at top and bottom and less in the middle.

mrfixit · Jul 13, 2007

I'm going with number one. Assuming the lash had been properly maintained, the rocker arm holds the pushrod fairly steady at the top, albeit somewhat, and the guide would get a more conical wear; Narrower at the top, broader at the bottom.

mrxlh · Jul 13, 2007

Ok Vince, so when are you going to give the answer? :rofl:

blacksnapon · Jul 13, 2007

mrxlh said:
Ok Vince, so when are you going to give the answer?

OOPS! The movement of the rocker arm will cause the valve stem to "rock" back and forth, causing wear at the top and bottom of the guide. Overhead cam engines with valve followers lessen this type of wear.

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measuring valve guide wear

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